Invoice app for gas engineers in Birmingham
Your Gas Safe number on every PDF. CP12 landlord certificates by voice note. Receipts, tax, MTD — same WhatsApp chat.
£29.99/mo · 7 days free · no card needed
Start Free on WhatsAppA real Birmingham gas engineer’s voice note:
"Mr Singh, Moseley Birmingham, annual boiler service, one-twenty plus parts forty-five."
What gas engineers in Birmingham actually have to log on a job
- Gas Safe number & ACS classes — Auto-prefixed on every invoice with your in-date ACS class numbers (CCN1, CENWAT, CKR1, HTR1, MET1, etc.).
- CP12 / Landlord Gas Safety Records — Issued in 30 seconds from a voice note and stored against the property.
- Gas tightness / let-by / standing pressure — Logged as an invoice note for audit.
- Boiler installation notification — Building Regs notification reference attaches with the invoice.
- Annual service reminders — 12-month auto-reminder to chase recurring revenue from the same customer.
What gas engineers in Birmingham actually deal with
Severn Trent Water across Birmingham and most of the West Midlands
Birmingham Clean Air Zone (CAZ-D) covers the city-centre A4540 ring road — £8 per day for non-compliant vans. Register with the government portal or you’ll get auto-fined.
Birmingham City Council plus the seven West Midlands metropolitan districts. Building Control is delivered via BCC’s own service or approved inspectors.
Edwardian and inter-war semi-detached dominate the suburbs; tower blocks and back-of-pavement terraces still common in inner-city areas; increasingly high-density new-build around the Colmore Business District and Perry Barr.
Serving Moseley, Harborne, Edgbaston, Kings Heath, Solihull and the rest of West Midlands. The CAZ forces many older trade vans into the daily-charge zone or off-site parking. More than one Birmingham spark I know now quotes two prices: "inside the ring road" and "outside it".
Birmingham sits slightly below national average — £45–£75 for most trades’ callouts, with premium for CAZ entry. Holdfort doesn’t set your prices — your rates are yours — but it stops you from losing track of what’s owed, what’s paid, and what’s been expensed along the way. All through WhatsApp. No app to install, no portal to log into.
Questions from Birmingham gas engineers
Yes. Speak the readings — standing pressure, working pressure, flue analysis — and Holdfort outputs a Gas Safe-format CP12 PDF that you sign on WhatsApp.
Yes — set once, prefixed on every quote, invoice, CP12 and service certificate, and Holdfort warns you 30 days before any class lapses.
Voice-note it as a line: "plus eight pounds CAZ day pass" — Holdfort adds the line item. Most Birmingham customers are fine with it, especially business customers who’d pay it anyway.
Yes — developers and letting agents love a fast branded PDF because it gets reviewed and paid inside their usual 28-day cycle. Several Birmingham builders use Holdfort to bill stage payments to developers on Colmore Row refurbs.
If you’re a WIAPS-approved plumber, your approval number prints on the invoice footer. No separate cert upload, no separate portal — it’s just text on the PDF.
Yes — quarterly-ready breakdowns and sole-trader categories. Required for self-employed earners over the MTD threshold from April 2026. See the MTD guide.
£29.99 per month, all in. 7 days free, no card needed to start. Founding-member price locked for life.
Birmingham gas engineer? Finish the job. Voice note the rest.
7 days free. 30 seconds to set up. Just WhatsApp.
Start Free on WhatsAppHold the fort. We’ve got the paperwork.